In the years that followed, the tin traveled between apartments and hands, sometimes forgotten, sometimes rediscovered. It gathered new marginalia: a child’s drawing, a train ticket, a busker’s lyric. What began as Mom’s cryptic line had become a living ledger of small repairs.

At first she planned to go alone. Then the Kaan Building showed its quiet, communal face: Mr. Serrano pressed an umbrella into her hands; Rebecca lent her a journal with Mom’s name in the margin; a neighbor from 3A rode with her, claiming to know the river routes. Ophelia realized she was not following a map. She was following an accumulation of small, deliberate hands, the way Mom had always done things — gathering others without asking permission.

The day the city thawed and the first rain of March came, Ophelia found a folded program tucked beneath the tin. It was old, the ink bled at the edges: MISSAX — Building Up — February 2, 2003. There was a small illustration: a ladder leaning against a painted wall, a woman handing another woman a handful of paint. In the corner of the program, faint but definite, Mom had scrawled: Mom XX Top.

She left Missax with a folded chunk of mural paint and a map that Mara drew, marking other spots where Mom had left traces. When Ophelia returned to the Kaan Building, the room they had made glowed like a small harbor. People were there soldering an old lamp to life, pressing flowers into glass, laughing over a shared memory that grew funnier each time it was told.

The storefront was smaller up close than it had seemed in the photo. The paint on the sign was flaking in concentric moons. Inside, the air smelled like old paper and lemon oil. A woman behind the counter looked up when Ophelia pushed the door, the bell making a direct, bright sound.

“Promise of what?” Ophelia whispered.